From owner-freebsd-current@FreeBSD.ORG Wed Mar 1 21:34:51 2006 Return-Path: X-Original-To: current@freebsd.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id F1D7016A420; Wed, 1 Mar 2006 21:34:50 +0000 (GMT) (envelope-from mi+mx@aldan.algebra.com) Received: from vms042pub.verizon.net (vms042pub.verizon.net [206.46.252.42]) by mx1.FreeBSD.org (Postfix) with ESMTP id 40DE543D76; Wed, 1 Mar 2006 21:34:38 +0000 (GMT) (envelope-from mi+mx@aldan.algebra.com) Received: from corbulon.video-collage.com ([151.204.231.237]) by vms042.mailsrvcs.net (Sun Java System Messaging Server 6.2-4.02 (built Sep 9 2005)) with ESMTPA id <0IVG00KOPX9O4KRG@vms042.mailsrvcs.net>; Wed, 01 Mar 2006 15:34:37 -0600 (CST) Received: from mteterin.us.murex.com (195-11.customer.cloud9.net [168.100.195.11]) by corbulon.video-collage.com (8.13.4/8.13.1) with ESMTP id k21LYZbr084340 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 01 Mar 2006 16:34:36 -0500 Received: from mteterin.us.murex.com (mteterin@localhost [127.0.0.1]) by mteterin.us.murex.com (8.13.4/8.13.4) with ESMTP id k21LYL0Y032993; Wed, 01 Mar 2006 16:34:21 -0500 Received: from localhost (localhost [[UNIX: localhost]]) by mteterin.us.murex.com (8.13.4/8.13.4/Submit) id k21LYJsJ032992; Wed, 01 Mar 2006 16:34:19 -0500 Date: Wed, 01 Mar 2006 16:34:19 -0500 From: Mikhail Teterin In-reply-to: <4405EFE9.6030807@elischer.org> To: Julian Elischer Message-id: <200603011634.19617.mi+mx@aldan.algebra.com> Organization: Virtual Estates, Inc. MIME-version: 1.0 Content-type: text/plain; charset=koi8-u Content-transfer-encoding: 8BIT Content-disposition: inline X-Virus-Scanned: ClamAV devel-20050525/1308/Wed Mar 1 05:13:39 2006 on corbulon.video-collage.com X-Virus-Status: Clean X-Scanned-By: MIMEDefang 2.43 References: <200603010505.k2155HfQ003205@aldan.algebra.com> <20060301144124.GA14411@uk.tiscali.com> <4405EFE9.6030807@elischer.org> X-Authentication-warning: mteterin.us.murex.com: mteterin set sender to mi+mx@aldan.algebra.com using -f User-Agent: KMail/1.8.3 X-Mailman-Approved-At: Wed, 01 Mar 2006 22:49:21 +0000 Cc: current@freebsd.org, sos@freebsd.org, "Mikhail T." , Brian Candler Subject: Re: pitiful performance of an SATA150 drive X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 01 Mar 2006 21:34:51 -0000 ÓÅÒÅÄÁ 01 ÂÅÒÅÚÅÎØ 2006 14:03, Julian Elischer ÷É ÎÁÐÉÓÁÌÉ: > I believe that linux uses bufferring in štheir 'raw' disks so that you > may be actually doing larger > reads and writes than you know.. (of course my knowledge of Linux is a > bit old so > they may have changed that) Let's not get distracted. dd using bs=1m is still limited to 7Mb/s on writing. -mi